Roller for drawing mechanism for fibrous material



Nov, 13, 19235.

R. CU'I'TAM ROLLER FOR DRAWING MECHANISM FOR FIBROUS MATERIAL OriginalFiled Jan. 26, 1.925

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Patented Nov. 13, 1923.

Y ferns ROBERT COTTAM, OF OLDI-IAM, THOMAS SEFTGN, OF

sHAW, AND JAMES EDWARD LEES, OF OLDHAM, ENGLAND.

Original application filed January 26, 1923, Serial No. 615,177. Dividedand this application filed July To all whom it may concern:

e it known that we, ROBERT CorrAM, TiroMAs Simon, and JAMES EDWARD Lens,subjects of the King of the United Kingdom of Great Britain and Ireland,and residents of lVorcester Street, Oldham, in the county of Lancaster,England, 10 Oak Street, Shaw, in the county of Lancaster, England, and41 Queens Road, Oldham, in the county of Lancaster, England,respectively, have invented new and useful In provements in Rollers forDrawing Mechanism for Fibrous Material, of which the following is aspecification.

This case is a division of our application filed January 26, 1923,Serial No. 615,177.

This invention consists in improvements in the rollers ordinarily calledself weight ed rollers which are made to bear with only their own Weighton fibrous material in the form of strands, slivers or rovings indrawing or drafting mechanisms of any kind in order to press suchfibrous material against rollers made to revolve or against othersurfaces made to revolve or to travel and particularly relates to selfweighted rollers for drawing or drafting mechanisms "used to effect highdrafting or great extensions of fibrous material.

The principal object of this invention is to obviate the defectsexperienced in the use of self weighted rollers in the methods hithertocustomary in drawing or drafting mechanisms, especially in cases inwhich the self weighted rollers are very light, through such rollersfailing to be revolved with approximate regularity by friction againstthe fibrous material on which they are made to bear or the rollers orsurfaces with which they cooperate;

With this principal object the invention consists in self weightedrollers formed of sleeves which are mounted freely around andeccentrically movable relatively to axles made to revolve in use forholding them in position and have between them and the axles resilientfrictional devices for ensuring the turning of the sleeves with theaxles without or substantially without the axles imparting ortransmitting pressure to the sleeves.

to the sleeves 10.

Serial No. 649,747.

The accompanying drawing shows rollers forming illustrative embodimentsof this invention. Figs. 1, 3, 5 and 7 are side elevations partlv inlongitudinal section and Figs. 2, 4t, 6 and 8 are transverse sectionsthe lines numbered in correspondence with figures indicating the severalplanes on which sections are taken. The same numerals of referenceindicate corresponding parts.

In the roller shown in Figs. 1 and 2, 9 is the axle formed with acentral boss 91 and two cylindrical arbors or rods 92 extending fromthat boss 91. The axle 9 is provided with two sleeves 10 loose aroundthe arbors 92 and free to move for a convenient dis tance eccentricallyin relation to them.

Round the arbors 92 are fixed sleeves 11 provided with tuft 111 ofbristles to bear lightly against the interior surfaces of the sleeves10. The boss 91 is made of a diameter such that it will hold up the axle9 by bearing upon the fluted roller or other surface with which theroller shown is to cooperate while the diameters of the arbors 92 andthe external diameters of the sleeves l0 and the diameters of thelongitudinal holes 101 through them are made such that the sleeves 10can move so far eccentrically in relation to the arbors 92 as to bear byonly or substantially onl their own weight on fibrous material or t efluted roller or other co-operating surface on which fibrous material isto be pressed while the bristles of the tufts 111 bear lightly againstthe interior surfaces of the sleeves 10. The arbors 92 are prevented bythe boss 91 from applying pressure or substantial pressure The boss 91bears on the fluted roller or other co-operating surfaces on whichfibrous material is to be pressed and promotes or ensures the turning ofthe axle 9 and the tufts 111 of bristles touching the interiors of thesleeves l0 friction- Vally cause the sleeves 10 to turn with the axle 9while bearing by only or substan tially only their own weight on fibrousmaterial or against the co-operating roller or surface and without orsubstantially without the axle 9 imparting or transmitting pressure tothem.

Two collars 12 equal in diameter to the boss 91 so as like it to bear onthe fluted roller'or other co-operating surface and to transmit movementto the axle 9 are pushed tightly "or otherwise secured on the arbors 92.The arbors 92 project through the col lars 12 so that the roller can berevolved in guides similarly to ordinary top rollers of drawing ordrafting mechanisms.

In Figs. 3 and 1, an axle 13 generally similar to that shown in Figs. 1and 2, with a central boss 131 from which extend cylin drical arbors 132is provided with two sleeves 14: which are applied around the arbors 132and made movable eccentrically in relation to them.

The longitudinalholes 141 of the sleeves 14. have barrel shaped ortubular springs 15 applied in them around the arbors 132 to bear lightlyagainstthe interior surfaces of the sleeves l t and preferably made togrip the arbors 132." The springs 15 are made light and easily yieldingso that while bearing against the sleeves 14: and against the arbors132, so as to ensure the turning of the sleeves 14c with the axle 13they will not make the sleeves 1 1 bear with more or sub stantially morethan just their own weight on fibrous material beneath them. More thanone spring may be used in each sleeve 14: if desirable. Two collars 16equal in diameter to the boss 131 so as like it to bear on the flutedroller or other co-operating surfaces and to transmit movement to theaxle 13 are pushed tightly or otherwise secured on the arbors 132.

In Figs. 5 and 6, an axle 17 generally similar to those shown in Figs. 1and 2' and Figs. 3 and 1 with central boss 171 from which extendcylindrical arbors 172 is pro vided with two sleeves 18 which areapplied around the arbors 172 and made movable eccentrically in relationto them by being formed with longitudinal holes 181 larger in diameterthan the arbors 172. The arbore 17 2 are furnished with transverse holes173 in which are loosely fitted light and easily yielding'springs 19 incompression to bear lightly with their ends against the in teriorsurfaces of the sleeves 18 and to afford frictional connection betweenthe sleeves 18 and the arbors 17 2 to ensure the turning of the sleeves18 with the axle 17. Although the springs 19 are free to move lengthwisein the holes 173 and so are little liable to bind in the holes 173 theyare preferably made light and easily yielding so that even should theybind in the holes 173 they will not make the sleeves 18 bear withsubstantially more than just their own weight on fibrous materialbeneath them. There may be one spring 19 or more in each arbor 17 2,

v two being shown. Preferably in the use with a sleeve 18 of a pluralityof springs 19 in holes 173 in an arbor 17 2 the holes 173 for mentto'the axle 17 are pushed tightly or,"

otherwise secured on the arbors 172.

In Figs. 7 and 8, an axle 21 generally similar to those shown in Figs. 1and 2, Figs. 3 and 4: and Figs-. 5 and 6, with a central boss 211 fromwhich extend cylindrical arbors 212- is provided with two sleeves 22which are applied around the arbors 212 and made movable eccentricallyin relation to them by being formed with holes 221 of larger diameterthan the arbors 212. Between the sleeves 22 and the arbors 212 carryingthem are applied fiat coiled springs 23 adapted to bear lightly againstthe interior surfaces of the sleeves 22; There may be one spring 23 ormore used with each sleeve 22, two being shown, and preferably thesprings 23 are. made to grip the arbors 212 to which they are applied soas to be held to them while bearing suiiiciently against the interiorsof the sleeves 22 around them to afford the friction requisite to ensurethat the sleeves 22 shall turn with the axle 21. The springs 23 are madelight and easily yielding so as to afford the requisite frictionalconnection between the sleeves 22 and the arbors 212 without causing thesleeves 22 to bear with substantially more than just their own weight onfibrous material beneath them. Two collars 2d of the same diameter asthe boss 211 so as like it to bear on the fluted roller or otherco-operating surface and to transmit movement to the axle 17 are pushedtightly or otherwise secured on the arbors 21.2. .Springs may be appliedin other ways to afford resilient frictional connection between thesleeves and axles while transmitting only very slight pressure to thesleeves, For example springs as shown in Figs. 7 and 8 to bear lightlyagainst the sleeves may be made to bear lightly against the axle butsufficiently to ensure turning of the sleeves with the axle, or springsmay be held as by their expansion to the sleeves and made to bearagainst the axle lightly but sufficiently to ensure turning of thesleeves with the axle. Also a spring applied as in Figs. 7 and. 8 may bemounted in a groove formed circumferentially around a boss formed on thearbor with which it is used. In difierent constructions the axles androller sleeves may be of difi'erent materials and be formed and disposedin other ways without departure from the spirit of this invention asembodied in the claims following. Thus the roller sleeves may be of any.formation'and material appropriate to the ways, mechanisms or machinesin which they are to be used, as for example they may be formed ofmetal, wood, vulcanite or other material suitable, and smooth, fluted orof other form or may be formed of cores of metal, wood, or othermaterial with coverings of leather or other material appropriate or onesleeve or more may be provided around one axle. Similarly the axles maybe formed or furnished in any suitable way with bosses or driving partsfor revolving the axles through bearing against or being made to engagewith and so to be revolved by the rollers or surfaces made to travelagainst which the sleeves are to press fibrous material, or by artsprovided on such rollers orsurfaces. The bosses or driving partsprovided on the axles for revolving them may be smooth or plain orfluted or roughened or covered with leather or adapted in any other wayfor bearing against or engaging with and receiving motion from fiutedrollers or other surfaces against which fibrous material is to bepressed by the sleeves of the rollers.

The weight of the axles and bosses or driving parts may be made to servealone for causing the bosses or driving parts to bear against or engagewith the rollers or surfaces made to travel such an axle be ing called aself weighted axle, or the axles may be weighted or made subject tospring pressure in any way convenient as, for ex ample, by weights orsprings applied to bear on the axles or in circumferential groovestherein in the parts between sleeves so that their revolution may bepromoted while they will have no or approximately no part in pressingthe sleeves against the fibrous material and the fibrous materialagainst the roller surfaces against which it is to be pressed. The tufts111 of bristles and the springs 14, 19 and 23 besides affordingfrictional connections for turning the sleeves with the axles on whichthey are respectively mounted fulfil also the function of resistingmovement of the sleeves from the co-operating rollers or surfaces withwhich they are used and counteracting the tendency of the inertia of thesleeves to delay or hinder the return of the sleeves to proper bearingon the fibrous material against the co-operating rollers or surfaces andto interfere with the equable bearing of the sleeves on such fibrousmaterial. Rollers comprising eccentrically movable sleeves mountedaround axles and used along with resilient frictional devices forensuring the turning of the sleeves with the axles according to thisinvention may be employed to co-operate with any kind or form of rollersor other surfaces in any forms of drawing or drafting mechanisms and maybe used as the only means of pressing fibrous material against therollers or surface with which they co-operate or may be used in pressingfibrous material against rollers or surfaces with which otherco-operating pressing rollers or devices are used.

What we do claim as our invention and desire to secure by Letters Patentis:

1. In a self weighted roller for a drawing mechanism as hereinbeforeindicated, a revoluble axle having means for bearing upon and beingrevolved by a moving part with which the roller is to co-operate and sosupporting and bringing about the revolution of the axle, a sleevemounted around and eccentrically movable relatively to the axle forbearing substantially by only its own weight on fibrous material andresilient frictional driving means be tween the axle and the sleeve forcausing the sleeve to turn with the axle while leaving said sleevefreely movable relatively to the axle.

2. In a self weighted roller for a drawing mechanism. as hereinbeforeindicated, a revoluble axle having means for bearing upon and beingrevolved by a moving part with which the roller is to co-operate and sosupporting and bringing about the revolution of the axle, sleevesmounted around and eccentrically movable relatively to the axle forbearing substantially by only their own weight on fibrous material andresilient frictional driving means between the axle and the sleeves forcausing the sleeves to turn with the axle while leaving said sleevesfreely movable relatively to the axle.

3. In a self weighted roller for a drawing mechanism as hereinbeforeindicated a self weighted revoluble axle having means for bearing uponand being revolved by a moving part with which the roller is toco-operate and so supporting and bringing about the revolution of theaxle, a sleeve mounted around and eccentrically movable relatively tothe axle for hearing substantially by only its own weight on fibrousmaterial and resilient frictional driving means between the axle and thesleeve for causing the sleeve to turn with the axle while leaving saidsleeve freely movable relatively to the axle.

4. In a self weighted roller for a drawing mechanism as hereinbeforeindicated a self weighted revoluble axle having means for bearing uponand being revolved by a moving part with which the roller is toco-operate and so supporting and bringing about the revolution of theaxle, sleeves mounted around and eccentrically movable relatively to theIn testimony, that We claim the foregoing axle for bearing substantiallyby only their as our invention, We have signed out names own Weightonfibrous material and resilient this nineteenth day of June, 1923.frictional driving means between the axle and the sleeves for causingthe sleeves to ROBERT COTTAM.

' turn With the aXle While leaving said sleeves THOMAS SEFTON.

freely movable relatively to the axle. JAMES EDWARD LEES.

